unmap_region+0x29f/0x2f0 mm/mmap.c:2331
 do_mas_align_munmap+0xef5/0x15a0 mm/mmap.c:2580
 do_mas_munmap+0x246/0x2b0 mm/mmap.c:2638
 __mmap_region mm/mmap.c:2686 [inline]
 mmap_region+0x8d4/0x2660 mm/mmap.c:2904
 do_mmap+0x8c5/0xf60 mm/mmap.c:1424
 vm_mmap_pgoff+0x1ca/0x2d0 mm/util.c:520
 ksys_mmap_pgoff+0x529/0x6d0 mm/mmap.c:1470
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
------------[ cut here ]------------
kernel BUG at mm/filemap.c:153!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5954 Comm: syz.5.376 Not tainted 6.1.134-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:filemap_unaccount_folio+0x5c2/0xa60 mm/filemap.c:153
Code: 07 38 c1 0f 8c 21 fe ff ff 48 89 ef e8 67 2e 2b 00 e9 14 fe ff ff e8 1d cf d3 ff 4c 89 ef 48 c7 c6 e0 1e 15 8b e8 4e 5c 13 00 <0f> 0b e8 07 cf d3 ff 4c 89 ef 48 c7 c6 60 24 15 8b e8 38 5c 13 00
RSP: 0018:ffffc9000c99f578 EFLAGS: 00010046
RAX: 8c5fdd5fb273c200 RBX: ffff88805138f508 RCX: ffffc9000c99f303
RDX: 0000000000000002 RSI: ffffffff8b0c1dc0 RDI: ffffffff8b5f5fe0
RBP: ffffc9000c99f718 R08: dffffc0000000000 R09: fffffbfff1d417a6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805138f508
R13: ffffea00019d3ac0 R14: ffffea00019d3ac0 R15: ffffea00019d3ac0
FS:  000055556d963500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c36bf32 CR3: 0000000063f04000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __filemap_remove_folio+0xc7/0xaa0 mm/filemap.c:222
 filemap_remove_folio+0x105/0x2e0 mm/filemap.c:255
 truncate_inode_folio+0x59/0x70 mm/truncate.c:195
 shmem_undo_range+0x570/0x2390 mm/shmem.c:942
 shmem_truncate_range mm/shmem.c:1062 [inline]
 shmem_evict_inode+0x265/0xa60 mm/shmem.c:1171
 evict+0x529/0x930 fs/inode.c:705
 __dentry_kill+0x436/0x650 fs/dcache.c:611
 dentry_kill+0xbb/0x290 fs/dcache.c:-1
 dput+0xfb/0x1d0 fs/dcache.c:918
 __fput+0x62e/0x8d0 fs/file_table.c:328
 task_work_run+0x246/0x300 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0x80 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcff4f8e169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff97bf53a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fcff51b7ba0 RCX: 00007fcff4f8e169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fcff51b7ba0 R08: 00000000000001cc R09: 0000001a97bf569f
R10: 00007fcff51b7ac0 R11: 0000000000000246 R12: 00000000000339f5
R13: 00007fcff51b6320 R14: ffffffffffffffff R15: 00007fff97bf54c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x5c2/0xa60 mm/filemap.c:153
Code: 07 38 c1 0f 8c 21 fe ff ff 48 89 ef e8 67 2e 2b 00 e9 14 fe ff ff e8 1d cf d3 ff 4c 89 ef 48 c7 c6 e0 1e 15 8b e8 4e 5c 13 00 <0f> 0b e8 07 cf d3 ff 4c 89 ef 48 c7 c6 60 24 15 8b e8 38 5c 13 00
RSP: 0018:ffffc9000c99f578 EFLAGS: 00010046
RAX: 8c5fdd5fb273c200 RBX: ffff88805138f508 RCX: ffffc9000c99f303
RDX: 0000000000000002 RSI: ffffffff8b0c1dc0 RDI: ffffffff8b5f5fe0
RBP: ffffc9000c99f718 R08: dffffc0000000000 R09: fffffbfff1d417a6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805138f508
R13: ffffea00019d3ac0 R14: ffffea00019d3ac0 R15: ffffea00019d3ac0
FS:  000055556d963500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c36bf32 CR3: 0000000063f04000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400